Documentation du code de simulation numérique SUNFLUIDH

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**The old release**
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The old version of file vifield_s.dat is composed with 12 lines of integer values. This version is still available for people used to the old version of VISFIELD.
   * The first two lines allows the user to select a series of files should be converted. The first line is associated to the subdomain number and the second line to the file number which are included in the file name.
   * The following line contains one integer value which defines the type of file to convert 
    * 0 : instantaneous fields : res_yyyyy_xxxxxxx.d
    * 1 : statistical fields   : rst_yyyyy_xxxxxxx.d
   * The third following lines are associated to the grid indices of the computational domain. These index set allows the user to build a space box for extracting only a part of fields from the computational domain.\\ If one of these index values is set to zero, the whole domain is considered regardless of the meshsize, including the ghost cells.
   * The following line contains just one integer value for selecting the type of format in which the file will be converted.\\ 0 : tecplot format (.plt) - 1 : VTK format (.vtk).
   * The following line is a peculiar data related to the vtk format conversion. An integer data defines if the vtk data must be written as a rectilinear form (value 0) or a structured-grid form (value 1).
   * The four last lines are reserved to the special case of data manipulation : Please, do not consider them for your work and do not modify them.
<file txt visfield_s.dat>
00000  1 !--- 1st subdomain number and total number of subdomains for file selection (related to the 1st number in the file name)
0 200  1 !--- 1st file number, last file number and file number-step for file selection (related to the 2nd number in the file name)
0        !--- Type of file to convert (0 : instantaneous fields, 1: statistical fields)
0  130   !--- Start and end indices along the I-direction | => space box for considering only a part of fields 
1  130   !--- Start and end indices along the J-direction |    a zero value indicates the whole computational domain is considered
1  130   !--- Start and end indices along the K-direction |
1        !--- selection of the format conversion -> 0 : tecplot format (.plt) - 1 : VTK format (.vtk)
0        ! Only for VTK format -> 0 : rectilinear form , 1: structured grid form
0        !--- special data. Do not modify it.
rst_00000_0000001.d !--- special data. Do not modify it.
3                   !--- special data. Do not modify it.
1   3               !--- special data. Do not modify them.
EOF
</file>
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**The new release**
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The new version of file, visfield_sunfluidh.dat, allows you to use much more functionalities of VISFIELD, like slice reading. Data setup is organised with the concept of Namelist.
All possibilites are described in the example given here.
<file txt visfield_sunfluidh.dat>
====================================================================================
====================================================================================
====================================================================================

Data parameters for converting the SUNFLUIDH binary files to Tecplot or VTK format

New data file for the new release of VISFIELD

====================================================================================
====================================================================================
====================================================================================

------------------------------------------------------------------------------------
          Domain decomposition  (MPI simulation)
------------------------------------------------------------------------------------

Number of subdomains along each direction  (I,J and K)
for a simulation performed with a domain decomposition approach (MPI)
If MergingData_Enabled=.true., all subdomain fields are grouped in a same Tecplot or VTK file

&DomainDecompositionFeatures NumberOfSubdomains_Idir= 1,
                             NumberOfSubdomains_Jdir= 1,
                             NumberOfSubdomains_Kdir= 1,
                             MergingData_Enabled=.false. /

------------------------------------------------------------------------------------
            File parameters
------------------------------------------------------------------------------------

Define the features of the file to convert

TypeOfData ='snapshots'       --> instantaneous fields                     : files res_xxxxx_yyyyyyy.d
TypeOfData ='block_snapshots' --> instantaneous fields on specified blocks : files res_xxxxx_yyyyyyy.d
TypeOfData ='stastistics'     --> statistics fields                        : files rst_xxxxx_yyyyyyy.d
TypeOfData ='slices'          --> fields on slices                         : files slice_sn_d_xxxxx_yyyyyyy.d

Special data :

TypeOfData ='space_averaged_snapshots'       --> space averaged snapshots along a direction : files spav_plan_d_yyyyyyy.d

             Default parameters implicitly imposed : MergingData_Enabled= .false. (data already gathered in a unic file)
                                                     Any parameter related to the domain decomposition is set such as only one domain is considered

with :
          xxxxx   : rank of subdomain (MPI process)
          yyyyyyy : number associated to the time recording of data
          d       : this number indicates the orientation of the plan (automatically considered by the VISFIELD)
          sn      : rank of the plane (rank in the SUNFHLUIDH data file)

          FirstSubdomainRank  = xxxxx   : first subdomain rank for files to convert
          NumberOfSubdomains  = xxxxx   : Number of subdomains to consider from FirstSubdomainRank
          SubdomainsStride              : Stride on subdomain ranks
          FirstRecordingIndex = yyyyyyy : first time recording value for files to convert
          LastRecordingIndex  = yyyyyyy : last time recording value for files to convert
          IndexStride                   : stride on time recording value
          FirstSlice_ID= sn      : Value of the first rank for 'slices' data files to convert
          LastSlice_ID = sn      : Value of the last  rank for 'slices' data files to convert
          FirstBlock_ID= sn      : Value of the first rank for 'block_snapshots' data files to convert
          LastBlock_ID = sn      : Value of the last  rank for 'block_snapshotss' data files to convert

Notes : - By default SubdomainsStride and IndexStride are set to 1
        - By default NumberOfSubdomains = NumberOfSubdomains_Idir * NumberOfSubdomains_Jdir* NumberOfSubdomains_Kdir
        - When 'slices' is selected, FirstSubdomainRank must be the lowest MPI rank in which the plane is defined.
                                     when MergingData_Enabled= .true. : NumberOfSubdomains is automatically updated by
                                                                        VISFIELD in regard to  NumberOfSubdomains_Idir, NumberOfSubdomains_Jdir and NumberOfSubdomains_Kdir
                                     when MergingData_Enabled= .false. :  NumberOfSubdomains must take into account all the MPI rank covering the plane
                                                                         (NumberOfSubdomains= FirstSubdomainRank + the highest MPI rank in which the plane is defined)
                                     If a file selected by VISFIELD is not present in the work directory, it is ignored
        - When 'snapshots' or 'statistics' is selected, NumberOfSubdomains can be ignored if NumberOfSubdomains_Idir, NumberOfSubdomains_Jdir, NumberOfSubdomains_Kdir are correctly set.
                                                        All subdomain will be considered if FirstSubdomainRank= 0
                                                        if the user want only convert some subdomain files, he may plays with FirstSubdomainRank, NumberOfSubdomains, SubdomainsStride

        - When 'space_averaged_snapshots' is selected, MergingData_Enabled= .false.  . Data are automatically regrouped in a single file
                                     If a file selected by VISFIELD is not present in the work directory, it is ignored



&DataFileFeatures  TypeOfData="statistics",
                   FirstRecordingIndex=1 ,
                   LastRecordingIndex= 1 ,
                   IndexStride= 1 /

!DataFileFeatures  TypeOfData="snapshots",
                   FirstRecordingIndex=1 ,
                   LastRecordingIndex= 5,
                   IndexStride= 1 /

!DataFileFeatures  TypeOfData="block_snapshots",
                   FirstRecordingIndex=1 ,
                   LastRecordingIndex= 10,
                   IndexStride= 1
                   FirstBlock_ID=1,
                   LastBlock_ID=1 /

!DataFileFeatures  TypeOfData="slices",
                   FirstRecordingIndex= 1 ,
                   LastRecordingIndex=  10,
                   FirstSubdomainRank  = 0,
                   NumberOfSubdomains= 1,
                   FirstSlice_ID=1,
                   LastSlice_ID=1,
                   IndexStride= 1 /


!DataFileFeatures  TypeOfData="space_averaged_snapshots",
                   FirstRecordingIndex=1 ,
                   LastRecordingIndex= 40 /
 ------------------------------------------------------------------------------------
            Format conversion
------------------------------------------------------------------------------------

VelocityCylindricalCoordinates= .True. In cylindrical geometry, the coordinates are converted to cartesian geometry while the velocity components leave in cylindrical geometry
                                       else (false) they also converted
TecplotFormat_Enabled= .true.   Binary data are converted to Tecplot data
VTKFormat_Enabled    = .true.   Binary data are converted to Legacy VTK data

&DataFormat  VelocityCylindricalCoordinates=.False.,
             TecplotFormat_Enabled = .True. /
            !VTKFormat_Enabled= .true. /

------------------------------------------------------------------------------------
    Special case : Extract field fluctuations from snapshots and statistics data
                   RESTRICTED USE !!!!
------------------------------------------------------------------------------------

&ExtractFluctuations_Special/ ExtractFluctuations_Enabled= .false. ,
                                            NumberOfFields= 1,
                                            StatisticsFileName='rst_00000_0000001.d' /         
</file>

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